QPP交织器的修正量度算法  

The Algorithm of Refined Metric of Quadratic Permutation Polynomial Interleavers

作　　者：肖文林[1] 李晓毅[1] 邵平[1] 马宁[1] 

机构地区：[1]重庆通信学院应急通信重庆市重点实验室,重庆400035

出　　处：《西南科技大学学报》2012年第2期61-64,共4页Journal of Southwest University of Science and Technology

基　　金：2009年度重庆市自然科学基金面上项目(CSTC;2009BB2348)

摘　　要：交织器是Turbo信道编码的重要组成部分,交织器的扩展因子通常是衡量一个交织器好坏的量度。阐述了基于整数环的QPP(quadratic permutation polynomials)交织器可以产生最大扩展因子,从代数几何视角研究了交织器的修正了的非线性度性质,提出了一种交织器的新的量度,这个量度是扩展因子和非线性度的函数。通过计算机仿真表明,由这种新的量度选择的交织器在误码率上表现出较优性能。An interleaver is a critical component for the channel coding performance of turbo codes. An interleaver of quadratic permutation polynomials over integer rings that could generate maximum-spread factor was presented. New properties of permutation polynomial interleavers were investigated from an al- gebraic-geometric perspective resulting in a new non-linearity metric for interleavers. A new interleaver metric that is a function of both the non-linearity metric and the spread factor was proposed. Extensive computer simulation results confirm the efficacy of the new metric on the error rates.

关 键 词：交织器 Turbo信道编码 误码性能 

分 类 号：TN911.22[电子电信—通信与信息系统]